Katherine “Scottie” MacGregor, best known for her role as Harriet Oleson on “Little House on the Prairie,” died Tuesday in Woodland Hills, California, her representative confirmed to NBC News. She was 93.

MacGregor played the gossipy, mean-spirited Harriet Oleson for 153 episodes of the popular 1970s series. On the show, she and her daughter Nellie (Alison Arngrim) served as the sour foils to the wholesome Ingalls, including Pa (Michael Landon) and Laura (Melissa Gilbert).